| 1 | Cation-induced assembly of Zn(Ⅱ),Cd(Ⅱ) and Hg(Ⅱ) coordination complexes and DFT calculations to evaluate weak interactions between the helical chains显示文摘Two new coordination polymers [ZnLI2]∞ (1) and [CdLI2]∞ (2) (L: 3,6-di-(1,2,4-triazole-1-yl)-N-hexylcarbazole) were synthesized and their crystal structures were determined by single-crystal X-ray diffraction techniques.Complexes are both constructed with the helical chains along the 21 screw axis.The coordination bond,C-H···I weak interactions and π-πinteractions play significant roles in constructing their 3D or 2D frameworks.Two different DFT calculations are performed for the weak interactions between the helical chains of the three different coordination polymers ([ZnLI2]∞,[CdLI2]∞ and the reported [HgLI2]∞).The results reveal that weak interactions play important roles in these supramolecular systems of helical configuration,namely,the trend is the shorter H···I distance and π-π stacking distance,the stronger the intermolecular interactions.The photoluminescence of the complexes measured in the solid state at room temperature indicates that the emission intensity varies extensively,which can be rationalized by the heavy atom effect. | GENG WenQian LI XianLei YIN JianHui KE WeiZai HAO FuYin XU GuoYi ZHOU HongPing WU JieYing TIAN YuPeng | 2011 | Science China Chemistry2011，54，1： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员